A Simple Letter Request Cannot Be Done

I am requested a settlement letter for my FNB Credit Card this morning however, upon receipt, it did not include the banking details nor reference number that this needs to be paid to. I have been on the phone with FNB and being transferred from pillar to post for the entire days but no one seems to be able to help. I was blatantly told that this is not possible and when asked to speak to a Team Leader or Supervisor, I was told "We work from home so I don't have a Manager to speak to you!!" Its a simple request, I just need a settlement letter reflecting the relevant details so that payment can be made. I do not need the details over the phone, SMS or email, it needs to be on an FNB letterhead.

Come on guys, I am trying to pay your money back but it seems like I need to beg you. If you dont need it, you more than welcome to write this off.